diff --git a/.github/workflows/overcloud-host-image-upload.yml b/.github/workflows/overcloud-host-image-upload.yml
index 459dd4709..065c39659 100644
--- a/.github/workflows/overcloud-host-image-upload.yml
+++ b/.github/workflows/overcloud-host-image-upload.yml
@@ -87,7 +87,7 @@ jobs:
       - name: Install OpenStack client
         run: |
           source venvs/kayobe/bin/activate &&
-          pip install python-openstackclient -c https://releases.openstack.org/constraints/upper/${{ steps.openstack_release.outputs.openstack_release }}
+          pip install python-openstackclient -c https://raw.githubusercontent.com/stackhpc/requirements/refs/heads/stackhpc/${{ steps.openstack_release.outputs.openstack_release }}/upper-constraints.txt
 
       - name: Output Rocky Linux 9 image tag
         id: rocky_9_image_tag
diff --git a/.github/workflows/stackhpc-ci-cleanup.yml b/.github/workflows/stackhpc-ci-cleanup.yml
index a14b2970c..74d5bc1ba 100644
--- a/.github/workflows/stackhpc-ci-cleanup.yml
+++ b/.github/workflows/stackhpc-ci-cleanup.yml
@@ -34,7 +34,7 @@ jobs:
 
       - name: Install OpenStack client
         run: |
-          pip install python-openstackclient -c https://releases.openstack.org/constraints/upper/${{ steps.openstack_release.outputs.openstack_release }}
+          pip install python-openstackclient -c https://raw.githubusercontent.com/stackhpc/requirements/refs/heads/stackhpc/${{ steps.openstack_release.outputs.openstack_release }}/upper-constraints.txt
 
       - name: Clean up aio instances over 3 hours old
         run: |
diff --git a/etc/kayobe/pip.yml b/etc/kayobe/pip.yml
index 563c3ce08..0d8dcc75a 100644
--- a/etc/kayobe/pip.yml
+++ b/etc/kayobe/pip.yml
@@ -3,7 +3,7 @@
 # Upper constraints file for installation of python packages.
 # Default value is
 # "https://releases.openstack.org/constraints/upper/{{ openstack_release }}"
-#pip_upper_constraints_file:
+pip_upper_constraints_file: "https://raw.githubusercontent.com/stackhpc/requirements/refs/heads/stackhpc/{{ openstack_release }}/upper-constraints.txt"
 
 # Use a local PyPi mirror for installing Pip packages
 #pip_local_mirror: false
diff --git a/tox.ini b/tox.ini
index 581e565b2..4e3386e4b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -6,7 +6,7 @@ skipsdist = True
 [testenv]
 install_command = pip install {opts} {packages}
 deps =
-    -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/2023.1}
+    -c{env:TOX_CONSTRAINTS_FILE:https://raw.githubusercontent.com/stackhpc/requirements/refs/heads/stackhpc/2023.1/upper-constraints.txt}
     -r{toxinidir}/test-requirements.txt
 
 [testenv:pep8]
@@ -20,7 +20,7 @@ commands =
 allowlist_externals = rm
 skip_install = true
 deps =
-  -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/2023.1}
+  -c{env:TOX_CONSTRAINTS_FILE:https://raw.githubusercontent.com/stackhpc/requirements/refs/heads/stackhpc/2023.1/upper-constraints.txt}
   -r{toxinidir}/releasenotes/requirements.txt
 commands =
   rm -rf releasenotes/build/html
@@ -30,7 +30,7 @@ commands =
 allowlist_externals = rm
 skip_install = true
 deps =
-    -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/2023.1}
+    -c{env:TOX_CONSTRAINTS_FILE:https://raw.githubusercontent.com/stackhpc/requirements/refs/heads/stackhpc/2023.1/upper-constraints.txt}
     -r{toxinidir}/doc/requirements.txt
 commands =
   rm -rf doc/build/html